Oklahoma State Highway 78

State Highway 78
Route information
Maintained by ODOT
Length:	60 mi (100 km)
Major junctions
South end:	SH 78 at the Texas state line
North end:	US-377/SH-99 in Tishomingo (concurrent with SH-22)
Highway system
Oklahoma State Highways Interstate U.S. Turnpikes ← US-77 SH-79 →

State Highway 78 is 60-mile (97 km) long^[1] (97 km) state highway in southern Oklahoma. It runs from the Red River (where it crosses into Texas as State Highway 78) to Tishomingo. It has no lettered spur routes.

Route description

SH-78 crossing the Red River

State Highway 78 enters Oklahoma across the Red River on the State Highway No. 78 Bridge at the Red River, near the unincorporated community of Karma. Near Yuba, SH-78 curves west to head toward Achille, where it meets State Highway 91. It curves back north here, meets State Highway 70E, and then passes through the east part of Durant, where it crosses US-70. In northern Durant, SH-78 has an interchange with the US-69/75 freeway.

Three miles north of US-69/75, SH-78 turns west to head through Cobb and Brown before turning north to meet State Highway 199. It meets SH-22 for the first time at Nida. It then passes through Emet and turns back west at Milburn. It then meets SH-22 for a second time three miles (5 km) east of Tishomingo. It then joins SH-22 into Tishomingo, where it ends at US-377/SH-99.

History

The road that would become SH-78 was originally commissioned as SH-299 on 1938-11-22.^[2] SH-299 was renumbered to SH-78 in its entirety in 1955,^[3] most likely to match the route number of TX-78.

Previous Routes

SH-78 was originally designated as a route from Boise City to the Texas Border.^[4] This route became US 385 in 1955.

Junction list

County	Location	mi[1]	km	Destinations	Notes
Bryan	Karma	0.0	0.0	TX 78	Texas state line, southern terminus
	Achille	15.9	25.6	SH-91
	​	22.4	36.0	SH-70E
	Durant	27.2	43.8	US-70
		27.8	44.7	US-70
		30.5	49.1	US-69/75	Half-folded diamond interchange[5]
	​	32.8	52.8	SH-48	Southern terminus of SH-48
	Brown	40.9	65.8	SH-199	Eastern terminus of SH-199
Johnston	Nida	44.1	71.0	SH-22
		44.3	71.3	SH-22
	Milburn	52.2	84.0	SH-48A
	​	57.4	92.4	SH-22
	Tishomingo	60.0	96.6	US-377/SH-99	Northern terminus (concurrent with SH-22)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

References

1. Stuve, Eric. "OK-78". OKHighways.com. Retrieved 2007-04-26.
2. Oklahoma Department of Transportation, Planning & Research Division. "Memorial Dedication & Revision History - SH-22". Retrieved 2007-05-08.
3. Official State Highway Map (Map) (1956 ed.). Oklahoma Department of Transportation.
4. Official State Highway Map (Map) (1940 ed.). Oklahoma Department of Transportation.
5. Google (June 8, 2009). "Oklahoma State Highway 78" (Map). Google Maps. Google. Retrieved June 8, 2009.

External links

• SH-78 at Roadklahoma